About Carex lyngbyei Hornem.
Carex lyngbyei Hornem. is a species of sedge with the common name Lyngbye's sedge. It is native to the west coast of North America, ranging from Alaska to California, where it is the common sedge of Pacific coastal salt marshes. It is also found in Greenland and Iceland. It prefers to grow in silty sediment rather than sand, and in habitats with brackish water such as salt marshes. This sedge grows stems 25 centimeters to well over one meter tall from a network of long rhizomes. Its leaves have reddish brown sheaths that do not have spots. The inflorescence produces stiff, nodding spikes on peduncles. Its fruit is coated in a leathery yellowish brown sac called a perigynium. This species is a pioneer species, and is one of the first plants to colonize the mud of tidal flats within its native range.